Struct time::PrimitiveDateTime

pub struct PrimitiveDateTime { /* fields omitted */ }

Combined date and time.

Implementations

impl PrimitiveDateTime

pub const fn new(date: Date, time: Time) -> Self

Create a new PrimitiveDateTime from the provided Date and Time.

assert_eq!(
    PrimitiveDateTime::new(date!("2019-01-01"), time!("0:00")),
    datetime!("2019-01-01 0:00"),
);

pub const fn date(self) -> Date

Get the Date component of the PrimitiveDateTime.

assert_eq!(datetime!("2019-01-01 0:00").date(), date!("2019-01-01"));

pub const fn time(self) -> Time

Get the Time component of the PrimitiveDateTime.

assert_eq!(datetime!("2019-01-01 0:00").time(), time!("0:00"));

pub const fn year(self) -> i32

Get the year of the date.

assert_eq!(datetime!("2019-01-01 0:00").year(), 2019);
assert_eq!(datetime!("2019-12-31 0:00").year(), 2019);
assert_eq!(datetime!("2020-01-01 0:00").year(), 2020);

pub const fn month(self) -> u8

Get the month of the date.

The returned value will always be in the range 1..=12.

assert_eq!(datetime!("2019-01-01 0:00").month(), 1);
assert_eq!(datetime!("2019-12-31 0:00").month(), 12);

pub const fn day(self) -> u8

Get the day of the date.

The returned value will always be in the range 1..=31.

assert_eq!(datetime!("2019-01-01 0:00").day(), 1);
assert_eq!(datetime!("2019-12-31 0:00").day(), 31);

pub const fn ordinal(self) -> u16

Get the day of the year.

The returned value will always be in the range 1..=366 (1..=365 for common years).

assert_eq!(datetime!("2019-01-01 0:00").ordinal(), 1);
assert_eq!(datetime!("2019-12-31 0:00").ordinal(), 365);

pub const fn iso_week(self) -> u8

Get the ISO week number.

The returned value will always be in the range 1..=53.

assert_eq!(datetime!("2019-01-01 0:00").iso_week(), 1);
assert_eq!(datetime!("2019-10-04 0:00").iso_week(), 40);
assert_eq!(datetime!("2020-01-01 0:00").iso_week(), 1);
assert_eq!(datetime!("2020-12-31 0:00").iso_week(), 53);
assert_eq!(datetime!("2021-01-01 0:00").iso_week(), 53);

pub const fn sunday_based_week(self) -> u8

Get the week number where week 1 begins on the first Sunday.

The returned value will always be in the range 0..=53.

assert_eq!(datetime!("2019-01-01 0:00").sunday_based_week(), 0);
assert_eq!(datetime!("2020-01-01 0:00").sunday_based_week(), 0);
assert_eq!(datetime!("2020-12-31 0:00").sunday_based_week(), 52);
assert_eq!(datetime!("2021-01-01 0:00").sunday_based_week(), 0);

pub const fn monday_based_week(self) -> u8

Get the week number where week 1 begins on the first Monday.

The returned value will always be in the range 0..=53.

assert_eq!(datetime!("2019-01-01 0:00").monday_based_week(), 0);
assert_eq!(datetime!("2020-01-01 0:00").monday_based_week(), 0);
assert_eq!(datetime!("2020-12-31 0:00").monday_based_week(), 52);
assert_eq!(datetime!("2021-01-01 0:00").monday_based_week(), 0);

pub const fn to_calendar_date(self) -> (i32, u8, u8)

Get the year, month, and day.

assert_eq!(
    datetime!("2019-01-01 0:00").to_calendar_date(),
    (2019, 1, 1)
);

pub const fn to_ordinal_date(self) -> (i32, u16)

Get the year and ordinal day number.

assert_eq!(datetime!("2019-01-01 0:00").to_ordinal_date(), (2019, 1));

pub const fn to_iso_week_date(self) -> (i32, u8, Weekday)

Get the ISO 8601 year, week number, and weekday.

assert_eq!(
    datetime!("2019-01-01 0:00").to_iso_week_date(),
    (2019, 1, Tuesday)
);
assert_eq!(
    datetime!("2019-10-04 0:00").to_iso_week_date(),
    (2019, 40, Friday)
);
assert_eq!(
    datetime!("2020-01-01 0:00").to_iso_week_date(),
    (2020, 1, Wednesday)
);
assert_eq!(
    datetime!("2020-12-31 0:00").to_iso_week_date(),
    (2020, 53, Thursday)
);
assert_eq!(
    datetime!("2021-01-01 0:00").to_iso_week_date(),
    (2020, 53, Friday)
);

pub const fn weekday(self) -> Weekday

Get the weekday.

assert_eq!(datetime!("2019-01-01 0:00").weekday(), Tuesday);
assert_eq!(datetime!("2019-02-01 0:00").weekday(), Friday);
assert_eq!(datetime!("2019-03-01 0:00").weekday(), Friday);
assert_eq!(datetime!("2019-04-01 0:00").weekday(), Monday);
assert_eq!(datetime!("2019-05-01 0:00").weekday(), Wednesday);
assert_eq!(datetime!("2019-06-01 0:00").weekday(), Saturday);
assert_eq!(datetime!("2019-07-01 0:00").weekday(), Monday);
assert_eq!(datetime!("2019-08-01 0:00").weekday(), Thursday);
assert_eq!(datetime!("2019-09-01 0:00").weekday(), Sunday);
assert_eq!(datetime!("2019-10-01 0:00").weekday(), Tuesday);
assert_eq!(datetime!("2019-11-01 0:00").weekday(), Friday);
assert_eq!(datetime!("2019-12-01 0:00").weekday(), Sunday);

pub const fn to_julian_day(self) -> i32

Get the Julian day for the date. The time is not taken into account for this calculation.

The algorithm to perform this conversion is derived from one provided by Peter Baum; it is freely available here.

assert_eq!(datetime!("-4713-11-24 0:00").to_julian_day(), 0);
assert_eq!(datetime!("2000-01-01 0:00").to_julian_day(), 2_451_545);
assert_eq!(datetime!("2019-01-01 0:00").to_julian_day(), 2_458_485);
assert_eq!(datetime!("2019-12-31 0:00").to_julian_day(), 2_458_849);

pub const fn as_hms(self) -> (u8, u8, u8)

Get the clock hour, minute, and second.

assert_eq!(datetime!("2020-01-01 0:00:00").as_hms(), (0, 0, 0));
assert_eq!(datetime!("2020-01-01 23:59:59").as_hms(), (23, 59, 59));

pub const fn as_hms_milli(self) -> (u8, u8, u8, u16)

Get the clock hour, minute, second, and millisecond.

assert_eq!(datetime!("2020-01-01 0:00:00").as_hms_milli(), (0, 0, 0, 0));
assert_eq!(
    datetime!("2020-01-01 23:59:59.999").as_hms_milli(),
    (23, 59, 59, 999)
);

pub const fn as_hms_micro(self) -> (u8, u8, u8, u32)

Get the clock hour, minute, second, and microsecond.

assert_eq!(datetime!("2020-01-01 0:00:00").as_hms_micro(), (0, 0, 0, 0));
assert_eq!(
    datetime!("2020-01-01 23:59:59.999_999").as_hms_micro(),
    (23, 59, 59, 999_999)
);

pub const fn as_hms_nano(self) -> (u8, u8, u8, u32)

Get the clock hour, minute, second, and nanosecond.

assert_eq!(datetime!("2020-01-01 0:00:00").as_hms_nano(), (0, 0, 0, 0));
assert_eq!(
    datetime!("2020-01-01 23:59:59.999_999_999").as_hms_nano(),
    (23, 59, 59, 999_999_999)
);

pub const fn hour(self) -> u8

Get the clock hour.

The returned value will always be in the range 0..24.

assert_eq!(datetime!("2019-01-01 0:00").hour(), 0);
assert_eq!(datetime!("2019-01-01 23:59:59").hour(), 23);

pub const fn minute(self) -> u8

Get the minute within the hour.

The returned value will always be in the range 0..60.

assert_eq!(datetime!("2019-01-01 0:00").minute(), 0);
assert_eq!(datetime!("2019-01-01 23:59:59").minute(), 59);

pub const fn second(self) -> u8

Get the second within the minute.

The returned value will always be in the range 0..60.

assert_eq!(datetime!("2019-01-01 0:00").second(), 0);
assert_eq!(datetime!("2019-01-01 23:59:59").second(), 59);

pub const fn millisecond(self) -> u16

Get the milliseconds within the second.

The returned value will always be in the range 0..1_000.

assert_eq!(datetime!("2019-01-01 0:00").millisecond(), 0);
assert_eq!(datetime!("2019-01-01 23:59:59.999").millisecond(), 999);

pub const fn microsecond(self) -> u32

Get the microseconds within the second.

The returned value will always be in the range 0..1_000_000.

assert_eq!(datetime!("2019-01-01 0:00").microsecond(), 0);
assert_eq!(
    datetime!("2019-01-01 23:59:59.999_999").microsecond(),
    999_999
);

pub const fn nanosecond(self) -> u32

Get the nanoseconds within the second.

The returned value will always be in the range 0..1_000_000_000.

assert_eq!(datetime!("2019-01-01 0:00").nanosecond(), 0);
assert_eq!(
    datetime!("2019-01-01 23:59:59.999_999_999").nanosecond(),
    999_999_999,
);

pub const fn assume_offset(self, offset: UtcOffset) -> OffsetDateTime

Assuming that the existing PrimitiveDateTime represents a moment in the provided UtcOffset, return an OffsetDateTime.

assert_eq!(
    datetime!("2019-01-01 0:00")
        .assume_offset(offset!("UTC"))
        .unix_timestamp(),
    1_546_300_800,
);
assert_eq!(
    datetime!("2019-01-01 0:00")
        .assume_offset(offset!("-1"))
        .unix_timestamp(),
    1_546_304_400,
);

pub const fn assume_utc(self) -> OffsetDateTime

Assuming that the existing PrimitiveDateTime represents a moment in the UTC, return an OffsetDateTime.

assert_eq!(
    datetime!("2019-01-01 0:00").assume_utc().unix_timestamp(),
    1_546_300_800,
);

impl PrimitiveDateTime

Methods that replace part of the PrimitiveDateTime.

#[must_use = "This method does not mutate the original `PrimitiveDateTime`."]

pub const fn replace_time(self, time: Time) -> Self

Replace the time, preserving the date.

assert_eq!(
    datetime!("2020-01-01 17:00").replace_time(time!("5:00")),
    datetime!("2020-01-01 5:00")
);

#[must_use = "This method does not mutate the original `PrimitiveDateTime`."]

pub const fn replace_date(self, date: Date) -> Self

Replace the date, preserving the time.

assert_eq!(
    datetime!("2020-01-01 12:00").replace_date(date!("2020-01-30")),
    datetime!("2020-01-30 12:00")
);

impl PrimitiveDateTime

pub fn format_into(
    self,
    output: &mut impl Write,
    format: &impl Formattable
) -> Result<usize, Format>

This is supported on crate feature formatting only.

Format the PrimitiveDateTime using the provided format description. The formatted value will be output to the provided writer. The format description will typically be parsed by using format_description::parse.

pub fn format(self, format: &impl Formattable) -> Result<String, Format>

This is supported on crate feature formatting only.

Format the PrimitiveDateTime using the provided format description. The format description will typically be parsed by using format_description::parse.

let format = format_description::parse("[year]-[month]-[day] [hour]:[minute]:[second]")?;
assert_eq!(
    datetime!("2020-01-02 03:04:05").format(&format)?,
    "2020-01-02 03:04:05"
);

impl PrimitiveDateTime

pub fn parse(input: &str, description: &impl Parsable) -> Result<Self, Parse>

This is supported on crate feature parsing only.

Parse a PrimitiveDateTime from the input using the provided format description. The format description will typically be parsed by using format_description::parse.

let format = format_description::parse("[year]-[month]-[day] [hour]:[minute]:[second]")?;
assert_eq!(
    PrimitiveDateTime::parse("2020-01-02 03:04:05", &format)?,
    datetime!("2020-01-02 03:04:05")
);

Trait Implementations

impl Add<Duration> for PrimitiveDateTime

type Output = Self

The resulting type after applying the + operator.

fn add(self, duration: Duration) -> Self::Output

Performs the + operation.

impl Add<Duration> for PrimitiveDateTime

type Output = Self

The resulting type after applying the + operator.

fn add(self, duration: StdDuration) -> Self::Output

Performs the + operation.

impl<T> AddAssign<T> for PrimitiveDateTime where
    Self: Add<T, Output = Self>, 

fn add_assign(&mut self, rhs: T)

Performs the += operation.

impl Arbitrary for PrimitiveDateTime

This is supported on crate feature quickcheck only.

fn arbitrary(g: &mut Gen) -> Self

Return an arbitrary value.

fn shrink(&self) -> Box<dyn Iterator<Item = Self>>

Return an iterator of values that are smaller than itself.

impl Clone for PrimitiveDateTime

fn clone(&self) -> PrimitiveDateTime

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for PrimitiveDateTime

impl Debug for PrimitiveDateTime

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> Deserialize<'a> for PrimitiveDateTime

This is supported on crate feature serde only.

fn deserialize<D: Deserializer<'a>>(deserializer: D) -> Result<Self, D::Error>

Deserialize this value from the given Serde deserializer.

impl Display for PrimitiveDateTime

This is supported on crate feature formatting only.

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for PrimitiveDateTime

impl Hash for PrimitiveDateTime

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

pub fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl Ord for PrimitiveDateTime

fn cmp(&self, other: &PrimitiveDateTime) -> Ordering

This method returns an Ordering between self and other.

#[must_use]

pub fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]

pub fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]

pub fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl PartialEq<PrimitiveDateTime> for PrimitiveDateTime

fn eq(&self, other: &PrimitiveDateTime) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &PrimitiveDateTime) -> bool

This method tests for !=.

impl PartialOrd<PrimitiveDateTime> for PrimitiveDateTime

fn partial_cmp(&self, other: &PrimitiveDateTime) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

#[must_use]

pub fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

#[must_use]

pub fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

#[must_use]

pub fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]

pub fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for PrimitiveDateTime

This is supported on crate feature serde only.

fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.

impl StructuralEq for PrimitiveDateTime

impl StructuralPartialEq for PrimitiveDateTime

impl Sub<Duration> for PrimitiveDateTime

type Output = Self

The resulting type after applying the - operator.

fn sub(self, duration: Duration) -> Self::Output

Performs the - operation.

impl Sub<Duration> for PrimitiveDateTime

type Output = Self

The resulting type after applying the - operator.

fn sub(self, duration: StdDuration) -> Self::Output

Performs the - operation.

impl Sub<PrimitiveDateTime> for PrimitiveDateTime

type Output = Duration

The resulting type after applying the - operator.

fn sub(self, rhs: Self) -> Self::Output

Performs the - operation.

impl<T> SubAssign<T> for PrimitiveDateTime where
    Self: Sub<T, Output = Self>, 

fn sub_assign(&mut self, rhs: T)

Performs the -= operation.

impl TryFrom<Parsed> for PrimitiveDateTime

This is supported on crate feature parsing only.

type Error = TryFromParsed

The type returned in the event of a conversion error.

fn try_from(parsed: Parsed) -> Result<Self, Self::Error>

Performs the conversion.